“total recall”, a factory worker named douglas quaid (starred colin farrell) goes to work everyday using a shuttle, which travels in a tunnel drilled through the center of the earth. neglecting rotational efects, show that the shuttle’s motion due to the gravitational force alone is simple harmonic if we assume earth has uniform density. estimate how much time douglas quaid spends everyday in commute?

carla slowed down in the beginning of her trip, stopped, and then sped up

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.